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73 lines
1.1 KiB
C
73 lines
1.1 KiB
C
#include <stdlib.h>
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static int my_isspace(int c)
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{
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return (c == ' ') || (c == '\f') || (c == '\n') ||
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(c == '\r') || (c == '\t') || (c == '\v');
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}
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long int __strtol_internal (const char *nptr, char **endptr, int base, int group)
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{
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long result = 0;
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int sign;
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while(my_isspace(*nptr))
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nptr++;
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if (*nptr == '-')
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{
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nptr++;
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sign = -1;
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} else if (*nptr == '+')
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{
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nptr++;
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sign = 1;
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} else
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sign = 1;
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if (base == 0)
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{
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if (*nptr == '0')
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{
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nptr++;
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if (*nptr == 'x')
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{
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base = 16;
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nptr++;
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} else
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base = 8;
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}
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else
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base = 10;
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}
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while (*nptr)
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{
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int digit;
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if ( (*nptr >= '0') && (*nptr <= '9') )
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digit = *nptr - '0';
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else if ( (*nptr >= 'a') && (*nptr <= 'z') )
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digit = *nptr - 'a' + 10;
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else if ( (*nptr >= 'A') && (*nptr <= 'Z') )
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digit = *nptr - 'A' + 10;
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else
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break;
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if (digit >= base)
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break;
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result = (result * base) + digit;
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nptr++;
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}
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if (endptr)
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*endptr = (char*)nptr;
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return sign * result;
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}
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long int strtol(const char *nptr, char **endptr, int base)
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{
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return __strtol_internal(nptr, endptr, base, 0);
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}
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